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(Pwn2Own) Microsoft Internet Explorer CAttrArray Use-After-Free Remote Code Execution Vulnerability

Reference ID: SSA-1402
Publication date: 09.07.2014
Severity: critical

Affected products/versions: Microsoft Internet Explorer 11

Description from ZDI advisory: This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Internet Explorer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of CAttrArray objects. By manipulating a document’s elements an attacker can force a dangling pointer to be reused after it has been freed. An attacker can leverage this vulnerability to execute code under the context of the current process.

References:
ZDI-14-219
CVE-2014-1765
Microsoft Security Bulletin MS14-037